S
M
T
W
T
F
S
26
87°
72°
27
90°
73°
28
92°
72°
29
91°
73°
30
88°
74°
31
88°
74°
1
87°
73°
2
88°
74°
3
88°
74°
4
89°
73°
5
88°
73°
6
89°
72°
7
91°
72°
8
90°
73°
9
89°
73°
10
89°
72°
11
88°
72°
12
90°
74°
13
88°
73°
14
89°
74°
15
88°
73°
16
88°
72°
17
89°
74°
18
89°
74°
19
88°
73°
20
88°
74°
21
87°
74°
22
88°
73°
23
90°
74°
24
92°
73°
25
92°
74°
26
91°
72°
27
90°
73°
28
89°
72°
29
90°
73°
30
91°
72°
31
88°
73°
1
87°
71°
2
87°
71°
3
88°
73°
4
88°
72°
5
89°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Slidell
Slidell's August 2026 forecast shows daily high temperatures ranging from 87° to 92°, with overnight lows between 71° and 74°. The average high for August is 89° with an average low of 73°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Slidell. See also: September | October | November.
